thirdparty/scummvm
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OPENGL: Implement high DPI support on Android (#1895)

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* OPENGL: Implement high DPI support on Android

* PSP2: Fix build
This commit is contained in:
Cameron Cawley 2019-11-01 11:39:46 +00:00 • committed by Antoniou Athanasios
parent 5d0206b9c2
commit 177d709909
11 changed files with 51 additions and 23 deletions
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18
backends/graphics/opengl/opengl-graphics.cpp
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@ -909,7 +909,7 @@ void OpenGLGraphicsManager::grabPalette(byte *colors, uint start, uint num) cons
memcpy(colors, _gamePalette + start * 3, num * 3);
}
void OpenGLGraphicsManager::handleResizeImpl(const int width, const int height) {
void OpenGLGraphicsManager::handleResizeImpl(const int width, const int height, const int xdpi, const int ydpi) {
// Setup backbuffer size.
_backBuffer.setDimensions(width, height);
@ -942,6 +942,10 @@ void OpenGLGraphicsManager::handleResizeImpl(const int width, const int height)
overlayWidth = MAX<uint>(overlayWidth, 256);
overlayHeight = MAX<uint>(overlayHeight, 200);
// HACK: Reduce the size of the overlay on high DPI screens.
overlayWidth = fracToInt(overlayWidth * (intToFrac(90) / xdpi));
overlayHeight = fracToInt(overlayHeight * (intToFrac(90) / ydpi));
if (!_overlay || _overlay->getFormat() != _defaultFormatAlpha) {
delete _overlay;
_overlay = nullptr;
@ -1008,7 +1012,7 @@ void OpenGLGraphicsManager::notifyContextCreate(const Graphics::PixelFormat &def
// Refresh the output screen dimensions if some are set up.
if (_windowWidth != 0 && _windowHeight != 0) {
handleResize(_windowWidth, _windowHeight);
handleResize(_windowWidth, _windowHeight, _xdpi, _ydpi);
}
// TODO: Should we try to convert textures into one of those formats if
@ -1275,6 +1279,16 @@ void OpenGLGraphicsManager::recalculateCursorScaling() {
_cursorHotspotYScaled = fracToInt(_cursorHotspotYScaled * screenScaleFactorY);
_cursorHeightScaled = fracToInt(_cursorHeightScaled * screenScaleFactorY);
} else {
const frac_t screenScaleFactorX = intToFrac(90) / _xdpi;
const frac_t screenScaleFactorY = intToFrac(90) / _ydpi;
// FIXME: Replace this with integer maths
_cursorHotspotXScaled /= fracToDouble(screenScaleFactorX);
_cursorWidthScaled /= fracToDouble(screenScaleFactorX);
_cursorHotspotYScaled /= fracToDouble(screenScaleFactorY);
_cursorHeightScaled /= fracToDouble(screenScaleFactorY);
}
}